Advertisement
Quick Links
I2C-AO112DV
DIN-rail I2C-bus 0-10VDC Analog Voltage Output Modules
1 Features
Single-Supply Operation: 2.7Vdc to 5.5Vdc
▪
I2C Interface: Standard (100kps), Fast(400kps) and High-Speed(3.4Mbps)
▪
Supports up to 8 boards on a single I2C bus
▪
Resolution: 12 bits
▪
DAC chips: MCP4725A0, MCP4725A1, MCP4725A2, MCP4725A3
▪
Build-in EEPROM on DAC chip
▪
Designed for Driving 0-10Vdc Instruments
▪
Maximum Capacitive Load: 1nF
▪
Maximum Output Current: 20mA
▪
Short-Circuit Protected Output (Short to GND)
▪
Output Surge Protection
▪
Mountable on a DIN-rail PCB holder
▪
PCB Dimensions: 20.0 x 72.0 mm
▪
2 Description
The I2C-AO112DV is an analog voltage output board, also referred to as a digital-to-analog converter (DAC) board. It
is designed to generate a standard analog voltage ranging from 0 V to 10 V, suitable for driving equipment such as AC
motor drivers and other devices commonly found in industrial control systems. The I2C-AO112DV receives commands
from microcontrollers (MCUs) via the I²C bus to generate analog voltage levels based on the received instructions. It
supports Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) I²C communication modes. The analog
output can drive a load current of up to 20 mA, with a maximum capacitive load of 1 nF. The output is also protected
against short circuits to ground and surge voltages, enhancing reliability in demanding environments. Operating from
a single supply voltage of 2.6 V to 5.5 V, the I2C-AO112DV is compatible with most MCU platforms. The I2C-AO112DV
family includes four models: I2C-AO112DV0, I2C-AO112DV1, I2C-AO112DV2, and I2C-AO112DV3. All models share the
same hardware specifications, with the only difference being their factory-assigned I²C addresses. Each model can be
configured to use one of two I²C addresses, allowing up to eight unique addresses. This enables up to eight boards to
be connected on a single I²C bus. The board dimensions are optimized for compatibility with standard DIN-rail PCB
holders, allowing for easy installation in industrial enclosures.
ERE Company Limited.
https://www.ereshop.com
I2C-AO112DV0, I2C-AO112DV1, I2C-AO112DV2, I2C-AO112DV3
Figure 1: Board diagram
User's Manual Rev. 1.0
1
Advertisement
Summary of Contents for ERE I2C-AO112DV
- Page 1 Operating from a single supply voltage of 2.6 V to 5.5 V, the I2C-AO112DV is compatible with most MCU platforms. The I2C-AO112DV family includes four models: I2C-AO112DV0, I2C-AO112DV1, I2C-AO112DV2, and I2C-AO112DV3. All models share the same hardware specifications, with the only difference being their factory-assigned I²C addresses.
- Page 2 I²C boards. To establish a proper connection, the MCU’s VCC, GND, SCL, and SDA lines must be connected to the corresponding pins on the I2C-AO112DV board. Thanks to its wide operating voltage range, the I2C-AO112DV is compatible with a variety of MCU families. Typically, an I²C bus requires pull-up resistors on the SCL and SDA lines.
- Page 3 I2C bus I2C bus Speed Standard (100kps), Fast(400kps), High-Speed(3.4Mbps) Output Voltage 0Vdc -10.2Vdc Resolution 12 bits (0 - 4095) Maximum Output Current 20mA Maximum Capacitive Load On-board pull-up resistor value (if enabled) ERE Company Limited. https://www.ereshop.com User’s Manual Rev. 1.0...
- Page 4 8.1 Driving Low Capacitive Load Input The I2C-AO112DV board is typically capable of driving a load with up to 1 nF of capacitive input without oscillation, as shown in the picture below. However, if the load has a higher input capacitance, oscillation may occur. To correct this issue, a series resistor should be added between the output and the load input, Fore more details refer to the next section.
Need help?
Do you have a question about the I2C-AO112DV and is the answer not in the manual?
Questions and answers